FSX HUGE FPS drop when I start the engines

[Error Code: 313]

Hello, whenever I start the plane engines in the executive tour mission, the FPS drops to 1 or less! Please help.

[Erazer]

I'm getting between 80 and 140FPS as I taxi toward the runway for take off.

There seems to be some problem with 'trees' on the runway and fences which won't let you get to the runway for some users.

Do you have anything like that happening?

If so turning down the scenery complexity might help.

[TextRich]

If your control settings has Force Feedback, uncheck it. Try turning off all sound. See if the FPS improves at all. There was another recent user whose FPS dropped due to conflict between sound drivers.

[Erazer]

Originally posted by Error Code: 313:

Hello, whenever I start the plane engines in the executive tour mission, the FPS drops to 1 or less! Please help.

Do you have more than one sound system available?

E.G. I use Realtek and have uninstalled the Nvidia Audio driver as the Realtek sound is very much better.

[maelstrom_19]

Originally posted by Erazer:

I use Realtek and have uninstalled the Nvidia Audio driver as the Realtek sound is very much better.

The Nvidia HD sound driver is only used to send sound through an HDMI cable to speakers in your monitor. It does nothing if you use desktop speakers.

[Erazer]

Originally posted by n74k2gunz8:

Originally posted by Erazer:

I use Realtek and have uninstalled the Nvidia Audio driver as the Realtek sound is very much better.

The Nvidia HD sound driver is only used to send sound through an HDMI cable to speakers in your monitor. It does nothing if you use desktop speakers.

Which is precisely why I uninstalled it given that these monitors don't have speakers...

It was part of the OEM installation which was superfluous.

Or is there some point about retaining a driver which is never used ?

[Erazer]

Monitors with built in speakers are primarily intended for office use as they give an uncluttered desktop without additional speakers. Built in speakers are not suitable for multi-media in any case as they are too small. They are only there so that the user can hear the Windows sounds.

[Erazer]

Your FPS will improve if FSX is installed on a partition of an M.2 SSD

You should see a x3 to x4 improvement with a suitable processor.

[Error Code: 313]

My FSX used to work fine, same setting same everything. But now, I am only getting less than 1 FPS. I appreciate all the responces.

[JJ FSX]

Originally posted by Error Code: 313:

My FSX used to work fine, same setting same everything. But now, I am only getting less than 1 FPS. I appreciate all the responces.

Are you talking about the SHIFT-Z display of framerate or some other overlay? Because they will not match and do not work the same way.

Related to this idea of really high frame rates, Years of research and real experience and input from many of the most experienced FSX technical people (some who have died now) over the years have taught me that, by nature FSX is a slow framerate program and to set the framerate for FSX to 30 and leave it there. If you set it to unlimited it will bounce up and down because here and there it can, for moments, get 100+fps but it causes stuttering and instability and crashes as your gpu goes through hell trying to keep it high. (I actually set mine to 31 just so I can see 30 in the display consistantly because otherwise it will show 29 point somthing most of the time. There is a bunch of technical stuff behind this that at one time I could have explaned it better. Now I forget some of the highly technical details but after decades I'm convinced this is best. I have 2-GTX770 SC's in SLI mode, these are 3 gens old but I get much higher rates on newer games (in the 90-120), its just FSX needs to be 30.

As far as your proplem is concerned, sometimes its neccessary to go back to the basics as far as you can and test. By that I mean disable any and all scenery/addons/mods you can, set clear skies weather, use the default Cessna etc. If it can do 30 fps with all defaults and at a small airport with little scenery, then change planes to the one you were using when the trouble showed up and see if its the aircraft. If it was fine in the default Cessna but drops with the aircraft then you have defined the problem as the aircraft and can go from there to find out what the problem with the aircraft is. If that aircraft then also can do 30fps or more at that same location then go to the airport your issue started with and see if its the "location" that is the problem. etc etc. You have to define the item that is causing the problem. If its bad with no mods going, no HD scenery and default aircraft, then you do have a bigger problem. It may not even be directly related to FSX, think about any changes that may have occurred with your OS or hardware or drivers that may have FSX trying to access something that no longer exists like your sound setup, or nvidia video card settings getting changed somehow, etc. If nothing there you may wan't to do a verify integrity of files check from the steam library and let it "re-aquire" any corrputed files if it finds. BUT if you have modded alot don't do that without being aware it may overwrite some mods if those mods replaced original files rather than just added to it. "Wanted" modifications to original files will then get overwritten by re-aquired originals and can cause a real problem that unless your aware of it, will call for a re-install of the mod afterwards. Many mods (such as REX clouds, Ultimate Terrain etc) are all about replacing original files and a verify/re-aquire has potential to really cause issues with those. So be aware.

Lastly; Always when modding or adding anything, only make one change at a time, test it then go onto the next change, don't make several at one time. There is just so much complexity and so much going on with FSX that its a delicate and detailed process managing mods/addons it becomes a real pain figuring out which change caused the problem if you do. For instance, I once got over-confident and installed 3 new aircraft at one time. Afterwards FSX kept crashing upon exit. So I had to remove all 3 new aircraft and start over to find out which one was the culprit. I knew I shouldn't have done it! And thats a simple one. FSX is not like your average video game, its a true "open to modification simulator". So it reqiures much attention to detail and much care.

[Error Code: 313]

I don't have any Nvidia sound drivers.

[Erazer]

Originally posted by Error Code: 313:

I don't have any Nvidia sound drivers.

Excellent.